It is clearly mentioning that the renewer is wrong (renewer marked is 'nobody' but mapred is trying to renew the token), you may want to check this.
Thanks, +Vinod On Dec 2, 2013, at 8:25 AM, Rainer Toebbicke wrote: > 2013-12-02 15:57:08,541 ERROR > org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException > as:mapred/xxx.cern...@cern.ch (auth:KERBEROS) > cause:org.apache.hadoop.security.AccessControlException: Client mapred tries > to renew a token with renewer specified as nobody -- CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.